Collin County vs Denton County
Two neighbouring counties in Texas, compared on population, size, income and housing. They share 29 mi of border.
Collin County
Texas
Denton County
Texas
Both outlines are drawn at true relative size. Denton County spans about 52.8 km at its widest.
Side by side
| Measure | Collin County | Difference | Denton County |
|---|---|---|---|
| Population | 1,297,179 | +21.3% | 1,069,346 |
| Change since 2020 | 20.6% | +3.7 pp | 16.9% |
| Land area | 841.5 sq mi | -4.2% | 878.8 sq mi |
| Population density | 1,541 per sq mi | +26.6% | 1,217 per sq mi |
| Median household income | $121,600 | +9.1% | $111,498 |
| Median home value | $475,600 | +8.8% | $437,200 |
| Median age | 37.3 | +0.8% | 37.0 |
| Households | 416,646 | +15.6% | 360,392 |
| Housing units | 437,396 | +16.1% | 376,754 |
Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026; US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. The difference column is computed here: the first county's figure against the second, expressed as a percentage of the second. The change-since-2020 row is the exception: two growth rates differ in percentage points (pp), not percent. Retrieved 30 August 2026.
What the numbers say
- Collin County holds about 1.2 times the population of Denton County: 1,297,179 against 1,069,346.
- Denton County covers more ground, at 878.8 square miles against 841.5.
- Collin County is the more crowded of the two, at 1,541 people per square mile against 1,217.
- Median household income is higher in Collin County, by 10,102 dollars a year.
- Since 2020, Collin County has grown by 20.6% and Denton County has grown by 16.9%.
- They share 29 mi of common border, which the Census Bureau publishes in its county adjacency file and which almost no other county reference presents.
Full pages
Want a different pair? Compare any two of the 3,144 US counties.
Rebuilt from source data 30 August 2026. How these figures are produced.